我忘记带钥匙了，现在进不了门。

I ___forgot to bring my keys and now I can't get in.

我把手机忘在咖啡店了。

I ___forgot my phone at the coffee shop.

我决定忘记那些不愉快的回忆，继续前进。

I decided to ___forget those unhappy memories and move on.

别忘了锁门。

Don't ___forget to lock the door.